I've not heard of/experienced any slow down with torrents, apart from at peak usage times - I reckon these are in the evening when lots of boys are gaming online. So it's not a Korea thing.

I'm sure your provider could slow down connection speeds but it's unlikely they could do so just for torrents. Their general tech won't recognize what is and isn't a torrent, but would recognize very high usage. Is watching YouTube videos or streaming movies working okay for you? If so then your downloading speeds are good. You could try a speed checker site to be sure.

Another way it could be slower is if some restricting software was applied by the landlord.

is it only torrents? how are streaming sites or direct downloads? im on a 100mb connection and get 8mb per sec on utorrent on some popular new films. so something is obviously wrong, possibly uttorrent itself? try a different torrent or go back an update as sometimes the latest utorrent updates really screw things up (happened to a mate of mine). dont forget your not getting throttled here as it isnt even illegal here to download just uploading is frowned upon.